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Message: <blockquote data-quote="Horoscope Fish" data-source="post: 222293" data-attributes="member: 13090">I don't know if this will help but just ran a test using my D7100... I use Auto ISO and shoot primarily in Aperture Priority mode so that's what my camera is set to use now...I went into the menus and changed the Auto ISO settings as follows: Minimum ISO to 100. Maximum ISO to 200. Minimum shutter speed was set to 1/125s and I chose an aperture of f/8. It's very dark and cloudy outside right now so this deliberately set up an impossible situation for Auto ISO to manage. The camera behaved as I expected: It used ISO 200 but dropped the shutter speed to 1/40s. Under the circumstances something had to give and that was, obviously, the shutter speed. This is what I would expect Auto ISO to do. It went no higher than programmed, used the aperture I selected and dropped the shutter speed to maintain proper exposure.Once I increased Maximum ISO to 6400, leaving all other settings the same, the shutter speed went to 1/125s but ISO increased to either 640 or 800 (I forget which). This is, again, what I would expect to happen. The Auto ISO feature tries to use my minimum shutter speed at the aperture I select and bumps the ISO to do that, but only as much as needed to meet the dialed in Minimum Shutter speed.So, while I'm not sure who's understanding of Auto ISO is correct here, that's how it works for me on my D7100, and that's how I would expect it to work......</blockquote>

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